Apostolos Siokis Konstantinos Christodoulopoulos Emmanouel A. Varvarigos Laying out interconnects on optical printed circuit boards. 101-112 2014 ANCS https://doi.org/10.1145/2658260.2658277 https://ieeexplore.ieee.org/document/7856405/ conf/ancs/2014 db/conf/ancs/ancs2014.html#SiokisCV14